Loose-leaf binder



March 9, 1948. J. A. PURVIS LOOSE LEAF BINDER Filed Oct. 28, 1944 at...a, 1948 UNITED STATES PATENT OFFICE noosn lizz' mnnn Judson A. M, chi-8J0, m. Application October 28, 1?, Serial No. 560,750, I

1 'I'Olalms.

The present invention relates to a novel loose leaf binder especiallyadapted for retaining loose sheets. charts or leaves for a pad, book,manual or similar article, and especially to a novel construction ofbinder in which the complementary parts are identical in constructionand operation. This permits a standardization in manufacture in thatthe'complementary parts forming the hinder may be made in continuousstrips and cut into the desired length. By thus manufacturing thebinderof identical sections or complementary parts formed or cut from acontinuous strip of material, manufacture thereof is greatly simplifled,the cost of production is considerably reduced and the number of sizesto be manufac- (o1. res-1) tured and required to be carried in stock isappreciably reduced.

Another'object of the present invention is the provision of a loose leafbinder in wluch one or more sheets may be quickly and freely inserted orwithdrawn from any position or location within the book.

Another distinct object of the present invention is that no backing orcover is required although it is readily adapted to the use of suchbacking or cover, if desired. 1

A further object of the present invention is the provision of anovelbinder in which the parts thereof do not extend beyond the edges ofthe sheets or leaves, or beyond the ends or edges of a cover where acover is employed, and the assembled book, pad or manual may be openedflat to thereby facilitate its use. Furthermore the pages or sheets donot offset when the book or manual is open.

A still further object of the present invention 2 susceptible ofmodification and change, and comprehends other details, arrangements ofparts. features and constructions without departing from the spirit ofthe invention. 1

In the drawings:

Figure 1 is a view in side elevation of the novel loose leaf binder withparts broken away to show its application toa plurality of sheets makingup a book, manual, pad or the like.

Figure 2 is a view in horizontal cross-section taken in a planerepresented by the line 2-2 of Figure 1, with the exception that two ofthe loops are shown in plan.

Figure 3 is a view in vertical cross-section through the binder andtaken on the line 3-4 of Figure 1.

- Figure 4 is a fragmentary view in perspective showing the manner ofjoining the identical combinder comprises or consists. of two identicalsecis to provide a binder composed of two identical parts or sectionswhich may be quickly assembled or disassembled by a longitudinalmovement. The assembly requires no pivotal connection or any springmechanism for opening or closing. Furthermore, the parts or sectionsautomatically and securely inter-lock when assembled.

Another advantage of the present binder is that standard paper or sheetsare employed and that it has a greater capacity for a given size thanprior formsof binders. In addition, no

special equipment is required to insert the binder into a book, pad,pamphlet or the like.

Further objects are to provide a construction of maximum simplicity,efllciency, economy and ease of assembly and operation, and such furtherobjects, advantages and capabilities as will later more fully appear andare inherently possessed thereby.

, The invention further resides in the construction, combination andarrangement of parts illustrated in the accompanying drawings, and whilethere is shown therein a preferred embodiment, it is to be understoodthat the same is tions formed or cut from a continuous strip of metal orthe like of suitable thickness or gauge. Each section comprises aninwardly projecting backing strip 3 provided with relatively closelyspaced arcuate projections lswhich, when the binder sections areassembled, provide closed loops for receiving a plurality of the sheets,charts, leaves or the like. Each backing strip is provided withsimilarly spaced and identical tongues 5 suitably spaced apart andpreferably stamped therefrom, with each tongue provided with aprotuberance or detent 6 for locking the sections in their assembledclosed relation.

As each section is identical, they may be made of a continuous length ofmetal or other suitable material having the desired properties andformed with the arcuate projections 4 and interlocking tongues 5, andthen cut into the required or desired lengths with the tongues adaptedto interengage and lock the complementary sections together when theyare slid or longitudinally moved into assembled relation. Similarly,when it is desired to remove a sheet, leaf or chart from the binder,these sections are moved 1ongitudinally to disengage the interlockingtongues and thereby permit their separation. Thus the inventioncomprehends a simplified construction that may be quickly assembled ordisassembled, and which is cheap to produce. The ends of the arcuateprojections which form the loops are preferably tapered at 1 in acomplementary manner so that these tapered or anguiarly disposed endsabut when the sections are assembled.

No cover or backing is required, but if desired one may be added. In theevent a cover or backing 8 is applied, the edge thereof is preferablyretained in position by means of projections 9 disposed on the backingstrip 3 and adapted to overlie the edge of the backing. It will bereadily appreciated that the invention comprehends a most simple andinexpensive loose leaf binder having the multiple advantages ofstandardization of parts in which the binder is made or stamped in acontinuous strip and then cut to the desired length to form twoidentical sections forming the entire structure of the novel invention.

Having thus described my invention, I claim:

1. A loose leaf binder requiring no backing so constructed and arangedas to permit their ready detachment for the removal or insertion of oneor more of the sheets from any place or position within the binderwithout disturbing or removing other sheets.

2. A loose leaf binder for a book, manual, pad or the like comprising apair of backing strips arranged in parallel planes, interlockingprojections on a face of each backing strip adapted to be enaged whenthe strips are longitudinally moved into abutting relation to close thebinder and separated when the binder is opened for removal or insertionof one or more sheets, and similarly spaced, complementary arcuateshaped loops projecting from each backing strip to combine and provide aplurality of closed binder rings, said backing strips being disposedradially inward and within the confines of the loops. so that the book,manual or pad will open flat in back to back relation.

3. A loose leaf binder for a plurality of sheets forming a book, manual,pad or the like in which one or more sheets may be readily removed fromany position therein without disturbing the other sheets, consisting ofa pair of sections each providing a backing strip arranged in parallelplanes, arcuate projections on each backing strip providing a pluralityof closely spaced, comple mentary, arcuate-shaped loops with the backingstrips projecting inwardly and disposed within the confines of theloops, the loops forminga plurality of spaced binder rings when thebinder is closed, and interengaging projections integral with eachbacking strip for automatically and detachably connecting these stripsto permit their ready assembly or separation for the insertion orremoval of one or more sheets and automatically lockin the loops inclosed position when manually moved longitudinally into contiguousrelation.

a. A loose leai binder for a book, manual, pad or the like in which oneor more sheets may be readily removed from any position therein withoutdisturbing the other sheets, consisting of a pair of complementarysections each having a backing strip with the backing strips arranged inparallel planes and formed with interlocking projections for detachablyconnecting these strips at spaced points along their adjacent sides whenmoved longitudinally into contiguous position for closing the binder,and similarly arranged and relatively closely spaced, complementary,arcuate-shaped loops secured upon and projecting from each backingstrip, which when the strips are in contiguous position, combine andprovide a plurality of closed binder rings, the backing strips beingdisposed radially inward and within the confines of the loops so thatthe book, manual or pad will open flat in back-to-back relation.

5. A loose leaf binder complete without backing or cover and in whichone or more sheetsmay be readily removed from any position thereinwithout disturbing the other sheets, consisting of a pair of detachablesections each composed of a backing strip provided with arcuate-shapedportions having their complementary ends angularly disposed and whenassembled providing closed loops, with the backing strips lying inparallel, abutting relation and projecting radially inward within theloops, and interlocking tongues disposed at spaced points along thestrip for locking the sections together when longitudinally moved intoabutting relation.

6. A loose leaf binder composed of a pair of sections each comprising abacking strip projecting radially inward "and provided withcomplementary arcuate projections adapted'to form closed binding ringswhen placed in abutting relation, and interlocking tongues and detentson each section for automatically retaining these sections assembledwhen longitudinally moved into abutting, interlocking relation, thesections being so constructed and arranged as to permit their readydetachment for the removal or insertion of one or more of the sheetsfrom any place or position within the binder without disturbing orremoving other sheets.

7. A loose leaf binder for a book, manual, pad or the like comprising apair of backing strips arranged in parallel planes, interlocking meanson said backing strips adapted to be engaged when the strips arelongitudinally moved into parallel, abutting relation to close thebinder and separated when the binder is opened for removal or insertionof one or more sheets, and spaced, complementary arcuate shaped loopsprojecting from each backing strip to combine and provide a plurality ofclosed binder rings, said backing strips beingdisposed radially inwardand within the confines of the loops so that the book, manual or padwill open fiat in back-to-back relation.

JUDSON A. PURVIS.

' nnrnanncas strap The following references are of record in the file ofthis patent:

UNITED STATES PATENTS

